Breaking capacity and derating
The higher IEC figure applies when the RCBO is used as a circuit breaker under industrial panel rules; the EN figure governs domestic/similar installations. Current derating is published for ambient temperatures from 30 °C to 70 °C. At 40 °C the continuous rating drops to 12.35 A; at 50 °C it is 11.57 A; at 60 °C it is 10.79 A; at 70 °C it is 10.01 A.
Mounting position is any — no restriction on upright or sideways installation. The supply cord can enter from either top or bottom, which simplifies busbar routing in crowded enclosures.
